Heating sleeve



FIG. 1 is a front view of a heating sleeve showing my new design, a rearview being a mirror image thereof;

FIG. 2 is a left side view of the heating sleeve;

FIG. 3 is a right side view of the heating sleeve;

FIG. 4 is a top view of the heating sleeve;

FIG. 5 is a bottom view of the heating sleeve; and,

FIG. 6 is a top front side perspective view of the heating sleeve.

The heating sleeve is shown with a symbolic break, the appearance of anyportion of the article between the break lines forms no part of theclaimed design.

CLAIM The ornamental design for a heating sleeve, as shown anddescribed.